From The Perry Mason TV Show Book (Revised)
There’s something very wrong at the Corning Company. First, $200,000 mysteriously turns up in a shoebox. Then an employee reports she’s been forwarding a large payroll to the company’s Mojave Monarch Mine. Trouble is, the mine is “dry.” Things really get strange when a woman claiming to be the company owner, Amelia Corning, shows up; no one has ever seen her before. No matter, because she soon disappears.

Perry enters the case when the mine’s foreman winds up dead and one of the company’s employees is charged with the murder. This thoroughly enjoyable episode is based on one of Erle Stanley Gardner’s later books.

[Revised to correct “Mojave” spelling.]